"Extremely Rare & in Mint condition, unused, Leica Elcan Navy Type KG-24A Underwater Housing. Originally built for the US Navy. Comes with original carrying case & instructions manual. In total only 50 of these were made, only a few are known to still exist!!! Manufactured by Ernst Leitz Canada Ltd Midland Ontario, in 1970. The subject is mostly an airtight container with a goal, which can enclose a Leica M4. Two side handles facilitate the grip by the use of gloves. On the "top" is: the lever charged, the switch times, and the knob of the focus but it must be done to estimate. Next to charging lever is a porthole to check the frame counter. A sight to sight, style "rear sight", allows you to frame your subject. The two gaps in relief around the outside which is housed inside the lens 90/2.8 Elcano, suggest the possibility of including a hood with snap-on. The inscriptions around the lens Elcano, are: the number of federal standard "Federal Stock Number "(WH6720-00-111-5819) and the type of model for the Marine KG-24A, serial number 240-0043 Elcan 90 f/2.8 lens.This version, painted in orange, was supplied to U.S. Navy divers."